There has been an issue with SCORM packages made by Articulate. Running these packages in Google Chrome 7 browser would produce insufficient reporting, therefore Coggno LMS would report status "incomplete" regardless of the final quiz completion.
www.articulate.com/forums/articulate-presenter/19848-bug-chrome-7-can-cause-issues-published-courses.html
The issue was caused by a bug in Google Chrome version 7. Fortunately the issue is fixed by Google team by now (many thanks to them). However, since we don't know how long it will take for the learners to upgrade from the faulty version of Chrome we suggest advising against using Google Chrome browser for at least a month of November 2010.